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USA Today reported that about 47% of the general consumer population in the United States is loyal to the automobile manufacturer of their choice. Suppose Chevrolet did a study of a random sample of 1008 Chevrolet owners and found that 487 said they would buy another Chevrolet. Does this indicate that the population proportion of consumers loyal to Chevrolet is more than 47%? Use α = 0.01.
Find the P-value of the test statistic. (Round your answer to four decimal places.)
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of a pain relief drug is normally distributed with mean 2 hours and standard deviation of 0.20 hours. For a patient selected at random:
What is the reputation risk? Is the reputation risk which is the greatest risk facing business today?
What sampling method is best suited for such a survey? Why? Draw the sample using the random number table and bring out the rationale of the procedure. Limit your sample to 25 persons.
Find the transformation matrix, Y=TX, such that has a covariance matrix of T such that Y has a covariance matrix.
The article "Viewers Speak Out Against Reality TV" (Associated Press, September 12, 2005) included the following statement: "Few people believe there's much reality in reality TV: a total of82percent said the shows are either 'totally made up' or ..
A Travel Weekly International Air Transport Association survey asked business travelers about the purpose for their most recent business trip.
Determine the three-month and five-month centered moving average curves and superimpose each on the original time series.
there are two types of machines called type a and type b. both type a and type b can be used to produce a certain
The expected rate of return on a Treasury Bill is 0.005, the expected rate of return on the Wilshire 5000 is 0.08 and the required rate of return of a stock
Examples of correlated variables. Give an example of two variables in your field of study that are- positively correlated- negatively correlated.
The University of California at Berkeley's Wellness Encyclopedia (1991) contains the following statement in its discussion of HIV testing: - Using the numbers in the statement above, what is the probability that your friend actually carries the viru..
One sample has a variance of s2=6 and a second sample has a variance of s2=8. If the two samples are the same size (n1=n2), then what is the pooled variance for the two samples?
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